Super C hydraulic pump

JohnV2000

Member
Does anyone know what the flow rate and pressure is on a Farmall Super C hydraulic pump? I am trying to determine if it is adequate to run a hydraulic motor.
 
No. The C pump is a small low pressure,low volume pump. It was not designed to do anything but run the tractors small lift system.Them,how do you propose to 'tap in' to the lines and hook up a separate valve?The small reservoir doesn't have enough oil capacity,either. To do all the things you have been asking about will require something bigger. Like a separate PTO pump/reservoir 'system'.But keep on asking and thinking. That's how you learn.
 
There was a hydraulic creeper attachment available from IH for the super c. I think it is shown in the tractor's parts catalog at case IH online. to me it looks like the existing hydraulic system drove a hydraulic motor to propel the tractor. If someone who has more info could fill in the blanks,it would be appreciated. I suspect the hydraulic pump is severely taxed in that setup. There are much better pumps (PTO, etc.) available aftermarket and surplus today for cheaper and more suitable for the OP intended uses than the original replacement pump.

Karl f
 
Thanks for the information.

I understand the Super C hydraulic pump is of limited capacity, but I really only need 1000 PSI and close to 4gpm flow rate. It can not produce that?
 
That is about the size of it. There is a replacement block where the lines go into the reservoir that allows remote attachments.
Bates equipment in Bourbon Indiana might help. Jim
 
(quoted from post at 08:37:50 02/20/19) That is about the size of it. There is a replacement block where the lines go into the reservoir that allows remote attachments.
Bates equipment in Bourbon Indiana might help. Jim

Thanks Jim. What I want to do is use the Super C hydraulic pump to run a low speed high torque (roughly 9.5 Cubic inch) hydraulic motor for a homemade hydraulic winch. I do not need high flow rate or that high of pressure because the motor does need to spin fast for a winch, and even 500 to 1000 PSI will be enough torque, I think.

The question is, is the reservoir big enough for my intended use if I use the stock hydraulic pump already on the Super C? Also, if I get the replacement block to run extra lines, do I just buy a hydraulic spool to control the motor and run the system like a typical hydraulic system?
 
A hydraulic motor is a open center device. It must have a return (zero pressure) hose to the reservoir. This means that the
reservoir will be getting back the fluid that is pumped out. The system will need to be filled with fluid once when started, then
the reservoir topped off. The only restriction is heat from viscous friction and pump heat building to excess. I do not think it
would be an issue if worked on an intermittent winch system. do some homework (I am a professor at St. Cloud State University, so
I assign homework) on open center hydraulics, and query the archives here on YT to dig into Super C hydraulics. Jim
 
(quoted from post at 10:14:04 02/20/19) A hydraulic motor is a open center device. It must have a return (zero pressure) hose to the reservoir. This means that the
reservoir will be getting back the fluid that is pumped out. The system will need to be filled with fluid once when started, then
the reservoir topped off. The only restriction is heat from viscous friction and pump heat building to excess. I do not think it
would be an issue if worked on an intermittent winch system. do some homework (I am a professor at St. Cloud State University, so
I assign homework) on open center hydraulics, and query the archives here on YT to dig into Super C hydraulics. Jim

Jim, thank you very much! You seem very knowledge on hydraulics. When I start building this winch, I hope you will not mind if I ask you some specific questions. Thanks, John.
 
If I don't know, the collective "WE" will. Reading is your friend, it assists in asking directed answerable questions. Jim
 
Your Super C hydraulic pump is not a %100 duty cycle pump and will get hot if run too much. It produces about 2000 lbs pressure if I remember
right.

Dave
 
(quoted from post at 15:50:02 02/20/19) Your Super C hydraulic pump is not a %100 duty cycle pump and will get hot if run too much. It produces about 2000 lbs pressure if I remember
right.

Dave

Thank you Dave. If I make a winch, it will he used at most for probably 30 seconds at a time and then it will rest for a couple minutes.

Any idea on the pump flow? I am trying to figure out what gears I will need for my winch, and to calculate hydraulic motor rpm, I need to know flow of the pump.
 
Based off what I KNOW the flow & PSI are on the Super H and Super M live pumps, then allowing for 60+
years of use and wear, I think you should have the 4 GPM and 1000 psi you need. The flow of a Super C
must be some great big secret, but Super M is 12 GPM and 1200 PSI, Super H is 10 GPM and supposed to be
1200 PSI but my Super H struggles to make 850 psi when I tested it 25 years ago, that's why there's a new
pump sitting in a box in the shop, so you should be fine on flow, but may need to switch to heavier oil
if your Super C doesn't run your winch to suit you. I use Hy-Tran which is supposed to be 10W oil, you
might need to use 20 or 30 weight to get your 1000 psi.
 
(quoted from post at 06:44:52 02/21/19) Based off what I KNOW the flow & PSI are on the Super H and Super M live pumps, then allowing for 60+
years of use and wear, I think you should have the 4 GPM and 1000 psi you need. The flow of a Super C
must be some great big secret, but Super M is 12 GPM and 1200 PSI, Super H is 10 GPM and supposed to be
1200 PSI but my Super H struggles to make 850 psi when I tested it 25 years ago, that's why there's a new
pump sitting in a box in the shop, so you should be fine on flow, but may need to switch to heavier oil
if your Super C doesn't run your winch to suit you. I use Hy-Tran which is supposed to be 10W oil, you
might need to use 20 or 30 weight to get your 1000 psi.

Thank you very much!

Do you happen to know what the lowest RPM the Super C engine will run at? I know it will run at about 1650rpm under load, but what will it run at if the throttle is all the way down. In other words, what is the lowest RPM the Super C can produce at the crankshaft. That way I can figure out the lowest flow rate the pump can produce.
 
Full load rpm on a SC according to TractorData is 1400 rpm, and that puts no load rpm around 1600-1650. A
4 cylinder IH engine can idle at 400 rpm, but I only run them that slow for a couple seconds before I
shut them off, otherwise I never let them get below 600 rpm and if I'm using them I'll run them 800-900-
1000 rpm, or wide open if I need the horse power.

I have a tach/hour meter/speedometer off a Farmall 300/350 on my Super H. The pto rpm hashmark on the
tachometer is 1750 and H/SH is 1650 but that's close enough for me. Last time I had anything attached go
the PTO was the bale elevator back around 1985. BUT, you could probably adapt a tack/hour meter off a 240
or 340 onto your SC. I looked at hundreds of techs before I decided the OEM IH techs were the best, cost
me less than $100 total in 1969.
 
If it has an alternator, running it at low idle will not hurt anything. If the oil pressure when warmed up is at 20 psi when at low idle it will idle forever.
There is nothing intrinsically different when idling that can cause issues. An alternator will charge the battery at idle, so there is no worry of a dead
battery (it could go dead if it had a generator as they usually do not charge at idle. You can probably adjust the idle mix and idle speed stop down to 400 RPM.
Jim
 

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